The tallest building in western europe designed by italian renzo piano is a sight to behold from the outside alone go in and reach the dizzy heights of the 72nd floor 244 metres from ground level to witness londons finest view and marvel at the spectacular panorama of the capital and beyond on a clear day see up to 40 miles round twice as far as with any other vantage point in the city from the floor to ceiling glass walls iconic buildings such as the gherkin olympic stadium o2 arena